Support branch/tag via @ syntax

[NathanBaulch]

Thanks for the neat tool.
I thought it would be nice if @ syntax was supported for branch/tag just like go get does. I did eventually find the --branch option but @ seems appropriate given this tool was originally inspired by the Go tooling.

This also has the advantage of allowing you to choose different branches when getting multiple repos at once, eg:

ghq get -P x-motemen/ghq@gotesplit men/gore@main NathanBaulch/[email protected]

I don't know about the other supported VCS providers but you can't directly clone a specific commit SHA in Git, so this go get scenario wouldn't be supported.

This implementation is pretty naive and will break if the repository URL contains an @ symbol for some reason. If this feature sounds useful then maybe we can come up with something more robust, perhaps by validating the branch/tag name.

Cheers.

[Songmu]

Sorry for the delay in responding. I think it's a nice feature, and I think it's a major technique, since the same revision specification is done in GitHub Actions as well as Go.
Let me think about it a bit.

[furushchev]

@Songmu Hello. This is a very nice addition. What is the current status on it?

[Songmu]

Thank you. I merged it and released it as v1.4.0.

[BlueGone]

This change introduced an important regression for my use case (and I suppose the use case of many people).
Indeed, I clone my projects with ssh, so all my cloning addresses contain an @ (example : ghq get [email protected]:x-motemen/ghq.git)
I do not know how to conciliate this new feature, and the cloning with ssh, but we should do something about it.

[Songmu]

@BlueGone That is exactly correct. Sorry for the inconvenience. Thanks for the great report. I will create a correction now.